In this paper, a new stereoendoscopic high-speed digital imaging system and a method to estimate the glottal functions are proposed. Glottal length, width, and area of one male and one female participants were estimated in different fundamental frequencies.

Physical task stress is known to affect the fundamental frequency of speech. This study of two American English vowels /IY/ and /AH/ investigates whether physical task stress affects the center frequencies of formants F1 and F2, and whether it affects the glottal open quotient, and whether these effects are different for different speakers, the different vowels, and two different vowel contexts...

This paper looks at the different hiatus resolution strategies in potential cases of /r/-liaison in nonrhotic English. Potential contexts of /r/-liaison were identified in a corpus of BBC newscasts and analysed auditorily and acoustically for the occurrence of /r/-liaison, glottal stops, creaky voice or hiatus. The results show that /r/-liaison is a common hiatus-breaking strategy although ther...

The speaker’s biometric voice fingerprint may be derived from voice as a whole, or from the vocal tract and glottal signals, after separation by inverse filtering. This last approach has been used by the authors in early work, where it has been shown that the biometric fingerprint obtained from the glottal source or related speech residuals gives a good description of the speaker’s identity and...

This paper deals with spectral representation of the glottal ow. The LF and the KLGLOTT88 models of the glottal ow are studied. In a rst part, we compute analytically the spectrum of the LF-model. Then, formulas are given for computing spectral tilt and amplitudes of the rst harmonics as functions of the LF-model parameters. In a second part we consider the spectrum of the KLGLOTT88 model. It i...

In vivo canine experiments have demonstrated that vocal fold stiffness varies proportionately with changing levels of recurrent laryngeal nerve (RLN) and superior laryngeal nerve (SLN) stimulation. This study evaluated the morphologic changes in the glottis at varying levels of nerve stimulation and the presumed effects on laryngeal air particle velocity. Stroboscopic data from the in vivo cani...

The great advantage of using a glottal source model in parametric speech synthesis is the degree of parametric flexibility it gives to transform and model aspects of voice quality and speaker identity. However, few studies have addressed how the glottal source affects the quality of synthetic speech. Here, we have developed the Glottal Spectral Separation (GSS) method which consists of separati...

Some glottal analysis approaches based upon linear prediction or complex cepstrum approaches have been proved to be effective to estimate glottal source from real speech utterances. We propose a new approach employing both an all-pole oddorder linear prediction to provide a coarse estimation and phase decomposition based causality/anti-causality separation to generate further refinements. The o...

Two new approaches to feature extraction for automatic emotion classification in speech are described and tested. The methods are based on recent laryngological experiments testing the glottal air flow during phonation. The proposed approach calculates the area under the spectral energy envelope of the speech signal (AUSEES) and the glottal waveform (AUSEEG). The new methods provided very high ...

Speech po1arit.y is crucial in many speec:t~ processing firlds. \Ve present, a nowl method to detrrrnine polarity of speech signals from gradient of spurious glot.t,al wavcsforms. VVe u&e t,he iterative adaptive LPC inverse filtering to cancel c:ff’ect of vocal t,ract transfer function while maintaining the most properties of source excitation. l’hcr~ we take the first-derivative (gradient. com...